I found this tooth in some matrix from the Lance formation in Wyoming. It doesn't have any serrations and it isn't as round as most of the crocodile teeth I have found. Any ideas? The scale is 1mm. Thanks.

Hey everyone! If someone could post a pic of what a HC champsosaur tooth looks like that would be appreciated. I have not found one yet (I thought I did a while ago but they turned out to be from Melvius) but I am interested to see what they really look like as most of what I see online look like fish teeth or crocodile teeth.
Thanks,
Noel

Hello Fossil Fans-
Once again, I would like to let you all know that the Tate Geological Museum will be running Dinosaur Digs this summer. We have five weeks of excavations open to the public for a somewhat nominal fee. I invite any of you who want to come out to Wyoming and truly experience a dinosaur dig with yours truly as chief bottle-washer to check out the web site:
https://www.caspercollege.edu/tate-geological-museum/events/digs
I know there are lot of folks here who collect fossils for themselves, so I need to say that these trips are collecting for the Tate Museum, not for personal collecting.

Hi everyone, I was wondering how one would distinguish the armor skull plates of a gar with some of the osteoderms found on sturgeon. I have definitely found the former but cannot be certain if I've found the prior. From looking at some pictures online I see similarity between the two and wondered if I had any in my collection and if I could properly identify a fossil as sturgeon as opposed to gar.

Here's another Cretaceous western fossil that needs an ID. Its either from Hell Creek or Lance Creek (will have to check my records again), and I initially purchased it as a young triceratops nasal horn. After looking at it some more, I'm wondering if it might be an ankylosaur spike, or maybe something else. Thoughts?

I found this theropod tooth in some Lance Formation material. I believe it is a dromaeosaur tooth, but was wondering if it is fairly complete or just the tip. The serrations get smaller toward the base and the curvature of the tooth seems to be curving back toward the base. What do you think? Hash marks are 1mm. Thanks.

I found these two going through some Lance formation (late cretaceous) matrix from Wyoming. The first (2 views) is a mammal tooth 1.9mm long and I am just showing it because I am proud of it. The 2nd, 4 views, looks like a mammal molar on one side (the side with the wavy lines similar to a rodent molar), but not necessarily on the other sides. I arbitrarily named two sides top and bottom but they may not be that. Any idea what the 2nd fossil is?
The hash marks are 1mm. Thanks.

Hi Everyone,
I suddenly have a work trip to the Black Hills of South Dakota coming up next week and I'd like to get out and collect some fossils along the way. I'm driving from Denver to Lead, SD and will be driving north on HW 85 and 18 through Newcastle.
I'd be really happy to get a few stops in along the way and any potential information would really be great. Unfortunately, I won't have a ton of time to be able to stop and really dig, so some road cuts or target formations would be super helpful for surface collecting. I'm open to every type of fossil.
I know there's a lot of fossils in that section of the state so I'm looking forward to hopefully finding some decent stuff!
Thanks!
Caleb

Hello Everyone,
These two items were both collected by me last summer in Eastern Wyoming, Lance Formation (Upper Cretaceous). They come from a productive sandy microsite which also produced material from triceratops, hadrosaur, dromeosaur, fish, amphibian, crocodile, and if I remember correctly, mammal. I found the two claws below, and was looking for opinions on what they might belong to. I searched for a while trying to find the rest of the larger partial claw, but no luck. It may be tough to make out the grooves on that larger partial specimen due to weathering and lighting, but they are there.
Any thoughts are greatly appreciated.

I have some Lance formation matrix I purchased on that auction site and I have been slowly breaking it down. This is one of my finds. I don't have a scale small enough to measure it against so . . . It is a little smaller than the head of a pin, flea speck. I did a Google image search on Lance Formation micro teeth but came up with nothing.
The photos were taken with my Nikon point an shoot through the eyepiece of my microscope. These photos are the best I can do.